Martensitic transformation of Ni-Mn-Ga (C, Si, Ge) Heusler alloys

First-principles and Monte Carlo studies of C-doped Ni45Co5Mn37In13Heusler alloys

“…Hence, because of the smaller ionic radius of C, the decrease of the cell volume would result in the decrease of the Mn Y -Mn Z distance, and as a consequence, tune both the martensitic transformation temperature (T m ) and the Curie temperatures of austenite (T C A ) and martensite (T C M ). The effect of the carbon on the martensitic transformation of Ni-Mn-Ga Heusler alloys has been discussed by Lu et al [8] and Chen et al [9]. In both studies the substitution of 1.6 at.% C for Ga content was found to increase the T m temperature and to disappear the intermartensitic transformation from five-layer modulated martensite to non-modulated martensite.…”

“…Among extensive researches on ternary and quaternary Ni-Mn-Z and Ni-Y-Mn-Z (Y = 3d element), there were few reports on the substitution of C in these alloys [8][9][10]. The modifying Mn Y -Mn Z distance can be expected caused by doping C element.…”

Phase transformation and mechanical properties of (Ni56.5Fe17Ga26.5)100−xGex ferromagnetic shape memory alloys

“…Among the trace elements, germanium is a very unique element in design of FSMAs. It has been effectively used for tailoring microstructures, MT and magnetic properties of Ni-Mn-Sn [20], Ni-Mn-Ga [21], and Fe-Mn-Ge [22]. However, no systematical study has been performed on the effect of the addition of Ge element on the properties of NiFeGa alloys.…”

Microstructure and martensitic transformation of Ni–Fe–Ga–Si ferromagnetic shape memory alloys

“…Tsuchiya et al [9] studied the alloying of Co, Cu, Al, Ge and Sn in Ni-Mn-Ga alloys. Lu et al [10] compared different Ni-Mn-Ga-(C, Si, Ge) alloys with the ternary one. Söderberg et al [11] studied the effect of Bi, Pb, Si, Sn and Zn in Ni-Mn-Ga alloys.…”